Intramedullary rod system using modular cutting splines

Details Intramedullary rod system using modular cutting splines Intramedullary rod system using modular cutting splines

1997-11-26

1999-11-02

Buiz, Michael

Surgery

Instruments

Orthopedic instrumentation

606 63, 606 64, 606 60, 606 72, 606 80, 606 85, 606 79, A61B 1756

Patent

active

059761377

ABSTRACT:
An intramedullary rod or nail for aligning a fractured long bone has a rod (100) that is inserted into the bone, with two longitudinal slots (120) into which cutting splines (200) are slid. The splines have cutting teeth (250) for cutting grooves into the bone as the splines slide along the slot. The cutting edges are substantially transverse to the length of the splines and rod. The tooth top surfaces (252) are disposed at gradually increasing radial heights. Recesses (251) between the cutting teeth store bone shavings to prevent jamming. The bone segments are held against bending, rotation, and lateral displacement because the splines are firmly engaged in the grooves they have cut. A blank spline without teeth may replace the cutting spline.

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